Elevating-truck.



PATENTED $32129, 1903.

No. 740,275. I

G. J. HOLL. ELEVATING TRUCK.- APPLIUA'IIIDNPILBD r33. 4. 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

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Iatented September 29, 190$.

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GUSTAV J. HOLL, OF CLEVELAND, OHIO.

E LEVATlN G-TRUCK.

SPECIFICATION forming part of Letters Patent No. 740,275, datedSeptember 29, 1903.

' Application filed February 4.. 1903.; Serial No. 141,911. on model.)

To aZZ whom it may concern:

Be it known that I, GUSTAV J. HOLL, of Cleveland, in the county ofCuyahoga and ,State of Ohio, have invented certain new and usefulImprovements in Elevating-Trucks; and I do hereby declare the followingto be a full, clear, and exact description of the in-. vention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

The object ofthis invention is to so construct an elevating-truckprimarily designed for carrying pallets of molded bricks that thelifting or elevating of the platform does not require any greater powerat the beginning of the operation than at its completion.

Fu rther objects contemplate the provision of a truck having a minimumnumber of parts coupled with great rigidity and insuring an evendistribution of the load on the platform.

The invention will be hereinafter fully set forth, and particularlypointed out in the claims.

In the accompanying drawings, Figure 1 is a view in side elevation withthe platform raised. Fig. 2 is a similar view with the platform lowered.Fig. 3 is a plan view. Fig. 4 is a rear end view with parts broken away.

Referring to the drawings, 1 designates the truck-axles, and 2carrying-wheels movable on rails 3.

4 designates the movable platform, composed, preferably, of parallelangle-bars 5, braced together by cross-bars 6. This platform issupported directly by the axles through supporting-frames 7, each framebeing angularly disposed and pivotally connected at its upper end tobars 5, the lower ends of the frames beingheld to the axles by olevises8, which permit the frames 7 to turn on the axles in the raising andlowering of the platform. 7 The platform is connected to the lowerportions of frames 7 by toggles 9. The toggles on each side of the truckare connected at their lower ends by brace-bars l0 and at their bends orknee-joints by a second set of bars 12, these bars 10 and 12 at theirforward ends extending short distances beyond the front toggles. Theforward supportingframe 7 is formed with offsets or shoulders 13,

with which are designed to engage stops 14, carried by the bars 12, suchengagement 0g; curring after the platform has beeulifted and the toggleshave passed slightly beyond their dead-centers, thus arresting anyfurther forward movement of the platform.

15 is the U-shaped handle secured at its ends in sockets of levers 16,fulcrumed on the extended ends of bars 10. These levers are slightlyangular and are connected at their rear ends by links 17 to the extendedends of bars 12. rear ends of levers 16 arein substantiallystraightlines with links 17, (see Fig. 2,) while when the toggles areapproximately perpendicular, as shown in Fig. 1, the lovers and linksare nearly at right angles to each other. By reason of this constructiontheraising of the platform does not require any greater power atthebeginning than at the ending of the movement. By bearing downwardlyon the outer end of the handle the platform will be caused to rise underthe action of the toggles, power being communicated thereto from levers16 through links 17 and bars 12. When the platform is fully raisedandthe toggles are just an appreciable extent beyond a deadcenter,further forward move ment of the platform is arrested by the engagemeutof stop 14 with the forward supportingframe 7.

The advantages of my invention are apparent. It will be seen that whenthe platform is raised the stability thereof is insured by the positionsoccupied by the toggles and 1 also that by the means employed theraising and lowering of the platform may be readily and easilyaccomplished. Furthermore, I am enabled to secure an equal distributionof the load by reason of. the connection between the platform and thetruck-axles. The

When the platform is lowered, the v axles being secured directly tothelower ends I of the supporting-frames 7, no lower frame is required,the bars 10 merely forminga brace to retain the axles andsupporting-frames in proper relative positions.

I claim as my invention- 1. A truck having a movable platform, front andrear toggles supporting such platform, parallel brace-bars to whichsuch-toggles are connected at their lower ends, connections between thetoggles, an angular lever fulcrumed on such brace-bars, and a linkconnecting such lever to the toggle connections, as set forth.

2. A truck having front and rear axles, a movable platform, meansconnecting the latter to said axles, toggles also connecting saidplatform to the axles, and means for actuating the toggles, as setforth.

3. A truck having front and rear axles, supporting-frames looselysecured to' such axles, a movable platform secured to such frames,toggles connecting said platform and axles, levers, and means connectingsuch levers to both sets of toggles, as set forth.

4. A truck having front and rear axles, supporting-frames looselysecured to such axles, a movable platform secured to such frames,toggles connecting said platform and axles, bars connecting the togglesat their bends or knee-joints, levers, and links connecting such leversto said connecting-bars, substantially as set forth.

5. A truck having front and rear axles, supporting-frames looselysecured to such axles, a movable platform secured to such frames,toggles connecting said platform and axles, bars connecting the togglesat their bends or knee-joints, levers, links connecting such levers tosaid connecting-bars, and a stop carried by said connecting-bars forengaging one of said supporting-frames to arrest the forward movement ofsaid platform, substantially as set forth.

6. A truck having front and rear axles, supporting-frames looselysecured to such axles, brace-bars 1O connecting such frames, a movableplatform secured to such frames, toggles secured at their upper ends tothe platform and at their lower ends to said frame, bars 12 connectingthe forward and rearward toggles at their bends or knee-joints, angularleversfulcrumed on said bars 10, links connecting such levers to saidbars 12, a handle secured at its ends to such levers, and astop carriedby said bars 12 for arresting the forward movement of the platform byengagement with one of the supportingframes, as set forth.

'7. The combination with the support, the carrying-wheels and axles, ofthe movable platform, means connecting such platform to said supportcomprising front and rear toggles, a connection between such toggles, anangular lever fulcru med on said support, and a link connecting suchlever to the toggle connection, said link and adjacent end of leverbeing in line when the platform'is lowered, and angularly disposed whenitis raised, substantially as set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

GUSTAV J. HOLL- Witnesses:

EDWARD S. ALLEN, PHILIP VOELKLE.

